Favorite thing: Split's Old Town and the Diocletian's Palace are full of interesting sights, including this impressive six storey campanile that rises above the Cathedral of St. Domnius in the heart of the palace. It was begun in the 13th century, but wasn't finally completed until 1908. The views from the top are great. You'll be able to get your bearings in the palace and see well beyond the Old Town out to greater Split.